//
//  counter.h
//  counter
//
//  Created by apple on 15/8/3.
//  Copyright (c) 2015年 戴维营. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface counter : NSObject
{
@public
    int _a;
    int _b;
@private
    int _result;

}
-(void)add;
-(void)decrease;
-(void)multiplication;
-(void)division;
-(void)printCore;
@end
